* { box-sizing: border-box; }

:root {
  --accent: #2955e8;
  --accent-dark: #1c3fb0;
  --ink: #14161c;
  --ink-soft: #52565f;
  --paper: #fbfbfa;
  --surface: #ffffff;
  --line: #e4e4e0;
  --dark: #0e1016;
  --dark-line: rgba(255, 255, 255, 0.12);
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
}

h1, h2, h3, .rna-h {
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }

.rna-container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 40px;
  padding-right: 40px;
}

/* Nav */
.rna-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 251, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.rna-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.rna-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}
.rna-logo span {
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.rna-nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.rna-nav-links a.rna-navlink {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 500;
}
.rna-nav-links a.rna-navlink.active {
  color: var(--ink);
}
.rna-btn {
  background: var(--accent);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  display: inline-block;
  border: none;
  cursor: pointer;
  font-family: inherit;
}
.rna-btn:hover { background: var(--accent-dark); color: #fff !important; }
.rna-btn-lg {
  padding: 14px 28px;
  font-size: 15px;
}

/* Hero */
.rna-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
}
.rna-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, var(--paper) 30%, rgba(251, 251, 250, 0.35) 100%);
}
.rna-hero-inner {
  position: relative;
  padding: 120px 40px 96px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 28px;
}
.rna-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-soft);
  font-family: "IBM Plex Mono", monospace;
  background: var(--surface);
}
.rna-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.rna-hero h1 {
  font-size: clamp(36px, 5.5vw, 64px);
  line-height: 1.05;
  font-weight: 600;
  letter-spacing: -0.02em;
  max-width: 820px;
  margin: 0;
}
.rna-hero p {
  font-size: 19px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 600px;
  margin: 0;
}
.rna-hero-ctas {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 8px;
  flex-wrap: wrap;
}
.rna-link-underline {
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  border-bottom: 1px solid var(--ink);
}
.rna-link-underline:hover { color: var(--ink); border-color: var(--accent); }

/* Section headers */
.rna-section-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* Services */
.rna-services {
  padding: 96px 0;
}
.rna-services-head {
  max-width: 600px;
  margin: 0 40px 56px;
}
.rna-services-head h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
.rna-services-head p {
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
}
.rna-services-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.rna-service-card {
  background: var(--surface);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.rna-service-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 0;
}
.rna-service-card p {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
  margin: 0;
}

/* About */
.rna-about {
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.rna-about-single {
  padding-top: 96px;
  padding-bottom: 96px;
}
.rna-about-single h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 32px;
  max-width: 700px;
}
.rna-about-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 760px;
}
.rna-about-copy p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.rna-about-copy p:first-child {
  font-size: 18px;
  color: var(--ink);
}

/* Dark CTA + footer */
.rna-dark {
  background: var(--dark);
  color: #fff;
}
.rna-cta-inner {
  padding: 96px 40px 64px;
}
.rna-cta-inner h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  max-width: 560px;
}
.rna-cta-inner p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 17px;
  line-height: 1.6;
  max-width: 520px;
  margin: 0 0 32px;
}
.rna-footer-inner {
  padding: 40px 40px;
  border-top: 1px solid var(--dark-line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
}
.rna-footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.rna-footer-logo span {
  font-weight: 600;
  font-size: 16px;
}
.rna-footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.rna-footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
}
.rna-footer-contact {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.rna-copyright {
  padding: 0 40px 32px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  max-width: 1200px;
  margin: 0 auto;
}

/* Contact page */
.rna-page-head {
  padding: 80px 40px 40px;
}
.rna-page-head h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  max-width: 600px;
}
.rna-page-head p {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.6;
  max-width: 560px;
  margin: 0;
}
.rna-contact-grid {
  padding: 16px 40px 96px;
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}
.rna-form {
  flex: 1 1 420px;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 40px;
}
.rna-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rna-field label {
  font-size: 14px;
  font-weight: 500;
}
.rna-field label .optional {
  color: var(--ink-soft);
  font-weight: 400;
}
.rna-input {
  border: 1px solid var(--line);
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  width: 100%;
}
.rna-input:focus {
  outline: none;
  border-color: var(--accent);
}
.rna-form-note {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
  display: none;
}
.rna-form-note.visible { display: block; }
.rna-contact-info {
  flex: 1 1 280px;
  min-width: 260px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 8px;
}
.rna-contact-info h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
}
.rna-contact-rows {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.rna-contact-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.rna-contact-row svg { flex-shrink: 0; margin-top: 2px; }
.rna-contact-row .label {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 2px;
}
.rna-contact-row .value {
  font-size: 15px;
  font-weight: 500;
}

@media (max-width: 900px) {
  .rna-services-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .rna-container, .rna-copyright { padding-left: 20px; padding-right: 20px; }
  .rna-services-grid { grid-template-columns: 1fr; }
  .rna-services-head { margin-left: 20px; margin-right: 20px; }
  .rna-nav-links a.rna-navlink { display: none; }
  .rna-hero-inner, .rna-cta-inner, .rna-about-single, .rna-page-head, .rna-contact-grid, .rna-footer-inner {
    padding-left: 20px;
    padding-right: 20px;
  }
}